EP0310514B2 - Binocular microscope - Google Patents
Binocular microscope Download PDFInfo
- Publication number
- EP0310514B2 EP0310514B2 EP88402465A EP88402465A EP0310514B2 EP 0310514 B2 EP0310514 B2 EP 0310514B2 EP 88402465 A EP88402465 A EP 88402465A EP 88402465 A EP88402465 A EP 88402465A EP 0310514 B2 EP0310514 B2 EP 0310514B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing portion
- pupil
- movable housing
- rays
- stationary housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/18—Arrangements with more than one light path, e.g. for comparing two specimens
- G02B21/20—Binocular arrangements
Definitions
- This invention relates to a binocular microscope in which the observing direction by an observer (hereinafter simply referred to as the "observing direction”, can be changed.
- the conventional operation microscope comprises a leg portion, a supporting post secured to the leg portion, a universal arm portion for vertically reciprocally moving the supporting post, and a mirror portion comprising a microscope and an illuminating device which are mounted on the foremost end of the universal arm.
- the mirror portion is rotatably mounted on the universal arm portion. Therefore, when the observer wants to change the observing direction, the whole mirror portion is rotated with respect to the universal arm.
- a microscope for the use of an assistant (hereinafter simply referred to as the "assistant microscope”) is rotatably mounted on a lens-barrel portion of a microscope for the use of an operator (hereinafter simply referred to as the "operator microscope”).
- the whole mirror portion is required to be rotated in order to change the observing direction of the operator microscope.
- the assistant microscope mounted on the lens-barrel of the operator microscope is employed, the operator and the assistant are interfered with each other. Therefore, the mounting position of the assistant microscope must be changed as such that the operator can carry out his operating work without interference.
- an operation microscope in which an assistant microscope receives a part of a beam of rays coming from an objective lens of an operator microscope through an optical member such as a half mirror, so that the view axis of the assistant microscope will be in alignment with that of the operator microscope.
- EP-A-167 926 a binocular microscope having its optical system carried by a support formed by the horizontal section of a L-shaped motion box.
- the vertical section of the box surrounds an upright carried by a stand.
- An objective is fixed to the bottom of the support.
- the optical system includes an optical support movable in the right and left direction on a guide formed at the top of the support.
- Another object of the present invention is to provide a binocular microscope in which a bright and stereoscopic observing image can be obtained even when the observing direction of the observer is changed.
- Another feature of the present invention is in that the radius of an outgoing pupil of a stationary housing portion is larger than that of an incident pupil of a movable housing portion.
- a further feature of the present invention is in that the radius of an incident pupil or a movable housing is larger than that of an outgoing pupil or a stationary housing portion so that most amount of beam of rays, which has passed through the outgoing pupil of the stationary housing to contribute in forming an image within a movable range of the movable housing portion, will pass through the incident pupil of the movable housing portion.
- a still further feature of the present invention is in that an outgoing pupil of a stationary housing portion and an incident pupil of a movable housing portion are spacedly formed.
- a yet further feature of the present invention is in that the movable range of a movable housing portion is limited as such that most amount of beam of rays, which has passed through an outgoing pupil of a stationary housing portion to contribute in forming an image, will pass through an incident pupil of the movable housing portion.
- An additional feature of the present invention is in that an objective optical system includes a variable power optical system, and an outgoing pupil of a stationary housing portion and an incident pupil of a movable housing portion are constituted as such that most amount of beam of rays, which has passed through the outgoing pupil to contribute in forming an image,will enter into the incident pupil at any power.
- a box-like body of a binocular microscope 1 comprises a stationary housing 2 and a movable housing 4 rotatably disposed on an upper surface of the stationary housing.
- the stationary housing 2 is provided therein with an objective optical system T.
- the objective optical system T comprises an objective lens 10 and a pair of variable power optical systems 12 for the use of both right and left eyes and a pair of stationary housing aperture diaphragms 14.
- 30 denotes an illuminating light source disposed within a casing C which is disposed at the outside of the stationary housing 2. Illuminating light emitted by the illuminating light source 30 is introduced into the stationary housing 2 through an aperture 2a which is formed in the stationary housing 2.
- 32 denotes an illuminating prism disposed within the stationary housing 2. The illuminating prism 32 is adapted to guide the illuminating light, which has been introduced into the stationary housing 2, to an object 6 through the objective lens 10 so that the illuminating light will illuminate the object.
- the objective lens 10, the illuminating prism 32, etc. are secured to the interior of the stationary housing 2 by a supporting member not illustrated.
- the variable power optical system 12 is held within the stationary housing 2 by a holding member not illustrated as such that the system 12 can rotate about a rotating axis 12a which is perpendicular to an optical axis 34.
- a relay optical system R and an ocular optical system S are disposed within the movable housing 4.
- the relay optical system R comprises a pair of movable housing aperture diaphragms 16 for the use of the right and left eyes, a pair of relay lenses 18, a roof prism 20 and a diamond-shaped prism 22, whereas the ocular optical system S comprises a reticle 24 and an ocular.
- these movaole housing aperture diaphragms 16, relay lenses 18, roof prism 20, diamond-shaped prism 22, reticle 24, ocular, etc. are secured to the interior of the movable housing 4 by a supporting member not illustrated.
- the binocular microscope 1 is designed as such that the object 6 can be stereoscopically observed through the pair of oculars 26 along a pair of optical axes 34 which are disposed at predetermined angles.
- the movable housing 4 is rotatably mounted on the stationary housing 2 as such that the housing 4 can rotate about a center line 36 disposed between the optical axes 34' of the right and left optical systems.
- the stationary housing 2 is provided at its upper surface with a guiding member of an arcuate shape encircled about the center line 36 and the movable housing is provided at its bottom surface with an engaging portion for engaging with the guiding member.
- the guiding member and the engaging portion serve as moving means.
- the stationary housing 2 is formed at its upper surface with a recess 9 and the movable housing is formed at its bottom surface with a projection 8 for engaging in the recess 8. Due to the foregoing arrangement, the rotating range of the movable housing 4 is restricted.
- variable power lens systems 12 are rotatable about the rotating axis 12a which is perpendicular to the optical axes 34' and that if it is rotated by 180° from the illustrated state, the power for observation is varied.
- Fig. 4 illustrates the state of beam of rays when the power has been varied.
- variable power optical system 12 If the variable power optical system 12 is rotated by 180° here, it is brought to be in the state as shown in Fig. 4(b) where the power is high.
- the stationary housing aperture diaphragm 14 is moved to the side of the objective lens 10 at this time, the outgoing pupil E at the side of tne stationary housing 2 is formed at a position away from the incident pupil E' at the side of the movable housing 4 as shown in the figure.
- variable power optical system constitutes a so-called afocal optical system, and the beam of rays emitted by the variable power optical system 12 becomes a parallel pencil of rays whether the power is low or high and made incident to the relay lenses 18.
- variable power optical system 12 forms an afocal optical system
- Fig. 5 illustrates the state where the movable housing 4 is not rotated with respect to the stationary housing 2.
- Fig. 5(a) shows the positions of the relay lenses 18 of the movable housing 4
- Fig. 5(b) shows the state of beam of rays from the relay lenses 18 to the imaging position at this time
- Fig. 5(c) shows images which can be observed through the oculars 26.
- 50 denotes a view field diaphragm
- 51 denotes an outgoing pupil at the side of tne stationary housing.
- the beam of rays are in the form of a parallel pencil of rays at the object side (left side in the figure) of the relay lens 18, and a variable power lens system not illustrated and an afocal optical system are formed.
- the beam of rays become a converging beam of rays at the image side (right side in the figure) of the relay lens 18, thereby to form images A' and O'.
- Fig. 6 illustrates the state where the movable housing is rotated about the center line 36 with the position of the parallel pencil of rays at the object side of the relay lens 18 as in the case with the afore-mentioned binocular microscope.
- Fig. 6(a) shows the position where the relay lenses 18 of the movable housing 4 are rotated
- Fig. 6(b) shows the position of a rotating plane 52 at this time and the state of beam of rays from the relay lens 18 to the positions of the images
- Fig. 6(c) shows images which can be observed through the oculars 26.
- Figs. 6(b) and 6(c) even when the movable housing 4 is rotated and the position of the relay lens 18 is moved with respect to the stationary housing 2, the extension of the beam of rays passing through the center of the relay lens 18 become the optical axis and also become the view field center O.
- the positions of the observing images are merely rotated by generally equal amount about the view field center O by the right and left oculars due to the rotation of the movable housing (see Fig. 6(c)), the state of the stereoscopic view is not jeoperdized.
- Fig. 7 illustrates the state where the movable housing 4 is rotated by serving the position at the image side of the relay lens 18 as a rotating plane 52'.
- Fig. 7(a) shows the position of the rotating plane 52' and the state of beam of rays from the relay lens 18 to the imaging position
- Fig. 7(b) shows an observing image through the oculars 26.
- the observation in this case accompanies the rotation about the center O as well as a parallel movement in the right and left opposite directions.
- the observing image obtained when the movable housing 4 is rotated is not a melting image and thus difficult to stereoscopically observe.
- the state of the observing images through the oculars 26 is varied depending on the size of the outgoing pupil at the side of the stationary housing 2 (hereinafter simply referred to as the"outgoing pupil") and that of the incident pupil at the side of the movable housing 4 (hereinafter simply referred to as the "incident pupil”) and the space formed therebetween.
- Figs. 8 through 12 show the conditions for obtaining images satisfactory for observation by the rotation of the movable housing 4
- Figs. (a) and (c) show the state of beam of rays on the incident plane E' at the side of the movable housing 4 before and after the rotation of the movable housing 4
- Figs. (b) and (d) show the state of beam of rays from the outgoing pupil E at the side of the stationary housing 2 and the incident pupil E' at the side of the movable housing 4 before and after the rotation of the movable housing 4 to the images A' and O'.
- Fig. 8 shows a case where the outgoing pupil E is larger than the incident pupil E' and the outgoing pupil is away from the incident pupil.
- Figs. 8(a) and 8(b) show the state of beam of rays before the rotation of the movable housing 4.
- the solid line P 1 shows a beam of rays converging to a point O'
- the broken line P 2 shows a beam of rays converging to a point A'.
- the beam of rays passing through the incident pupil E' of a comparatively small diameter is included in the outgoing pupil E and forms images O' and A'.
- Figs.8(c) and (d) show the state of beam of rays after the rotation of the movable housing 4.
- the beam of rays (the beam of rays shown by the broken line in the figures) which passes through the incident pupil E' to contribute in forming an image at the point A' as well as the beam of rays (the beam of rays shown by the solid line in the figures) which contributes in forming an image at the point O' are included in the outgoing pupil E, there can be obtained an image as bright as the observing image before the rotation of the movable housing 4, and the image will not become dark due to the rotation of the movable housing 4. The same is true when the movable housing 4 is rotated counter-clockwise.
- Fig. 9 shows a case which is the same as Fig. 8 in the respect that the outgoing pupil E is larger than the Incident pupil E' but which is different in that the outgoing pupil is formed proximate to the incident pupil. Therefore, although the state of beam of rays is in the same relation as that of Fig. 8, there can be obtained an image as bright as an observing image before the rotation of the movable housing 4 even after the rotation of the movable housing 4, even if the outgoing pupil is comparatively small compared with the case of Fig. 8.
- Fig. 10 shows a case in which the incident pupil E' is larger than the outgoing pupil E and the outgoing pupil E is away from the incident pupil E'.
- Figs. (a) and (b) show the state of beam of rays before the rotation of the movable housing 4.
- the solid line P 1 shows the beam of rays converging to the point O'
- the broken line P 2 shows the beam of rays converging to the point A'.
- the beam of rays passing through the outgoing pupil E of a small diameter is included in the incident pupil E' and forms images O' and A'.
- Figs. (c) and (d) show the state of beam of rays after the rotation of the movable housing 4.
- the beam of rays (the beam of rays shown by the broken line P 2 in the figure) which passes the outgoing pupil E to contribute in forming an image at the point A' as well as the beam of rays (the beam of rays shown by the solid line P 1 in the figure) which contributes in forming an image at the point O' are included in the incident pupil E, there can be obtained an image as bright as an observing image before the rotation of the movable housing 4, and the image will not become dark due to the rotation of the movable housing 4. The same is true when the movable housing 4 is rotated counter-clockwise.
- Fig. 11 shows a case which is the same as that of Fig. 10 in the respect that the outgoing pupil E is smaller than the incident pupil E' but which is different in that the outgoing pupil is formed proximate to the incident pupil. Therefore, although the state of the beam of rays is in the relation similar to that of Fig. 10, there can be obtained an image as bright as an observing image before the rotation of the movable housing 4 even after the rotation of the movable housing 4, even if the incident pupil is comparatively small.
- Fig. 12 shows a case which is suitable when the angle of rotation of the movable housing is small and in which the outgoing pupil E and the incident pupil E' are generally in the same size and generally in the same position.
- Figs. 12(a) and 12-(b) show the state of beam of rays before the rotation of the movable housing, and the significance of the beam of rays shown by the broken line and the beam of rays shown by the solid line is generally the same to that of Fig. 8. Therefore, the beams of rays, which have passed through the outgoing pupil and the incident pupil, all contribute in forming images as shown in the figures.
- Figs. 12(c) and 12(d) show the state of beams of rays after the rotation of the movable housing 4.
- the beam of rays, which contributes in forming an image after the rotation of the movable housing is that which passes through both the outgoing pupil at the side of the stationary housing and the incident pupil at the side of the movable housing as shown in the figures, and the amount thereof is reduced as the movable housing is rotated further.
- the means for moving the movable housing is rotatable about the center line which is parallel with the optical axis of the variable power optical system
- the present invention is not limited to this embodiment.
- the present invention is likewise applicable even if the movable housing is linearly moved but within a plane perpendicular to the optical axis.
- an image will not become darker even if the observing direction is varied by moving the movable housing, and there can be obtained an image which can be stereoscopically observed.
- the present invention is to be applied to a binocular microscope having the afore-mentioned variable power optical system, if it is constituted as such that the outgoing pupil at the side of the stationary housing as well as the incident pupil at the side of the movable housing are in either relation shown in Figs. 8 through 12 at any power, a favorable image can be stereoscopically observed even when the observing direction is varied.
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microscoopes, Condenser (AREA)
- Lenses (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62245973A JP2744615B2 (ja) | 1987-09-30 | 1987-09-30 | 双眼顕微鏡 |
JP245973/87 | 1987-09-30 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0310514A2 EP0310514A2 (en) | 1989-04-05 |
EP0310514A3 EP0310514A3 (en) | 1990-03-14 |
EP0310514B1 EP0310514B1 (en) | 1994-04-06 |
EP0310514B2 true EP0310514B2 (en) | 2006-10-18 |
Family
ID=17141587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88402465A Expired - Lifetime EP0310514B2 (en) | 1987-09-30 | 1988-09-29 | Binocular microscope |
Country Status (4)
Country | Link |
---|---|
US (1) | US5015081A (ja) |
EP (1) | EP0310514B2 (ja) |
JP (1) | JP2744615B2 (ja) |
DE (1) | DE3888911T3 (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5227914A (en) * | 1990-07-18 | 1993-07-13 | Olympus Optical Co., Ltd. | Stereomicroscope including a single variable magnification optical system |
DE4212924C2 (de) * | 1991-07-23 | 2001-11-29 | Olympus Optical Co | Stereomikroskop |
US5539572A (en) * | 1992-10-06 | 1996-07-23 | Greenberg; Gary | Microscope illumination and stereo viewing |
JP4611491B2 (ja) * | 1999-05-31 | 2011-01-12 | Hoya株式会社 | ビデオ型立体顕微鏡 |
JP2002267940A (ja) * | 2001-03-09 | 2002-09-18 | Olympus Optical Co Ltd | 倒立型顕微鏡システム |
DE10130621B4 (de) * | 2001-06-26 | 2005-07-28 | Carl Zeiss Jena Gmbh | Mikroskoptubus |
US6982827B2 (en) | 2002-11-15 | 2006-01-03 | Carl-Zeiss-Stiftung | Surgical microscope arrangement and interface unit for a surgical microscope |
DE10300455A1 (de) * | 2003-01-07 | 2004-07-15 | Leica Microsystems Wetzlar Gmbh | Tubus zur Adaption an ein Mikroskop |
EP2175302B1 (en) | 2007-08-07 | 2018-09-19 | Nikon Corporation | Microscope |
CN101339091B (zh) * | 2008-08-14 | 2010-10-06 | 南京东利来光电实业有限责任公司 | 齐焦检查方法及齐焦检查仪 |
CN104238070B (zh) * | 2008-11-26 | 2017-01-04 | 袖珍光学发展有限公司 | 改进的双目镜观察装置 |
EP2472300A3 (en) | 2009-01-29 | 2015-08-26 | Nikon Corporation | Imaging optical system, microscope apparatus including the imaging optical system, and stereoscopic microscope apparatus |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439526A (en) * | 1944-04-14 | 1948-04-13 | Harvey N Ott | Adjustable microscope eyepiece mounting |
DE2654778C2 (de) * | 1976-12-03 | 1981-12-17 | Fa. Carl Zeiss, 7920 Heidenheim | Stereomikroskoptubus |
SE440413B (sv) * | 1978-11-28 | 1985-07-29 | Zeiss Carl Fa | Anordning vid mikroskop |
DE2919678C3 (de) * | 1979-05-16 | 1983-03-24 | Fa. Carl Zeiss, 7920 Heidenheim | Zusatzobjektive für binokulare Operationsmikroskope |
JPS5720714A (en) * | 1980-07-15 | 1982-02-03 | Olympus Optical Co Ltd | Lens barrel system |
JPS58211731A (ja) * | 1982-06-04 | 1983-12-09 | Nippon Kogaku Kk <Nikon> | 偏光顕微鏡のコノスコ−プ光学系 |
US4601550A (en) * | 1983-08-08 | 1986-07-22 | Tokyo Kogaku Kikai Kabushiki Kaisha | Stereo-microscope with a common objective lens system |
DE3333471A1 (de) * | 1983-09-16 | 1985-04-04 | Fa. Carl Zeiss, 7920 Heidenheim | Operationsmikroskop fuer zwei operateure |
US4548481A (en) * | 1983-11-07 | 1985-10-22 | Nippon Kogaku K.K. | Variable magnification observation optical device |
ATE37616T1 (de) * | 1984-06-29 | 1988-10-15 | Wild Heerbrugg Ag | Mikroskop mit einem binokularen tubus. |
US4678291A (en) * | 1984-12-14 | 1987-07-07 | C. Reichert Optische Werke Ag | Optical arrangement for microscopes |
US4705367A (en) * | 1986-05-14 | 1987-11-10 | United Technologies Corporation | Variable focal length optical system having a constant diameter focal spot |
JPH0778574B2 (ja) * | 1986-06-05 | 1995-08-23 | オリンパス光学工業株式会社 | 実体顕微鏡用可変傾斜角双眼鏡筒 |
-
1987
- 1987-09-30 JP JP62245973A patent/JP2744615B2/ja not_active Expired - Lifetime
-
1988
- 1988-09-29 DE DE3888911T patent/DE3888911T3/de not_active Expired - Fee Related
- 1988-09-29 EP EP88402465A patent/EP0310514B2/en not_active Expired - Lifetime
-
1989
- 1989-12-14 US US07/449,052 patent/US5015081A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0310514A2 (en) | 1989-04-05 |
DE3888911T3 (de) | 2007-05-31 |
US5015081A (en) | 1991-05-14 |
EP0310514A3 (en) | 1990-03-14 |
DE3888911D1 (de) | 1994-05-11 |
DE3888911T2 (de) | 1994-08-11 |
JP2744615B2 (ja) | 1998-04-28 |
JPS6488513A (en) | 1989-04-03 |
EP0310514B1 (en) | 1994-04-06 |
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